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likebirds,lizardsandhamsters,"Liusaid."Inmanybigcities,catsanddogshavebecomeanimportantpartofmanyfamiliesandaretakengoodcareof.Sowhatwelookforarenotjustpets,butfamilymembers.”Apartfrompetundertakersanddetectives,somepeopleworkaspetfoodtesters,petsittersandpettrainers.AccordingtoTuDi,secretary-generaloftheHunanPetIndustryAssociation,theboomingpetmarketshowspeople'simprovedlivingstandards.However,therearealsoproblemswiththeindustry,forexample,thehighfeesoftakingpetstothevet()Manypetownershavecalledforstricterpricingregulationsforpetmedicalservices,reportedGlobalTimes.24.WhyisLiao'sstorymentionedinthefirstparagraph?A.Tointroducethetopic.B.Toteachreadersalesson.C.Tosumupthemainidea.D.Toinvolvereadersinastory.25.Howdoestheauthorshowthepetmarketisgrowing?A.Byintroducinganargument.B.Bytellingsometruestories.C.Bygivingnumbersandexamples.D.Byfocusingonbasicpet-relatedservices.26.WhatisTuDi'sattitudetowardtheboomingpetmarket?A.Negative.B.Positive.C.Doubtful.D.Indifferent.27.Whatconcernisthegrowingpetindustrybringingabout?A.Thelowqualityofservices.B.Therapidgrowthoftheindustry.C.Thelackofrelatedregulations.D.Thevariousneedsofanimallovers.CLanguageisthebridgethatconnectspeopleeverywhere.OnApril20,peoplearoundtheworldcelebratedtheUnitedNationsChineseLanguageDay.Tomarktheoccasion,theUNOfficeatGeneva,Switzerland,organizedthefirstChineseLanguageVideoFestival(CLVF).Participantsfrom27countries,includingtheUS,theUK,France,Germany,ItalyandJapan,tookpartintheone-hourspecialevent,sharingtheirpassionfortheChineselanguageandculturethroughshortvideos.Over340videosubmissions(toldtouchingstoriesaboutacivilized,modernandyouthfulChinathroughparticipants'personalexperiencesinthecountry.Thoughsomepeoplefindthelanguagedifficulttolearn,mostfindittoberewarding.ForM.YousaffromPakistan,learningChinesegavehimabetterperspective(andinsightintotheculture."LearningChineseisnotjustlearningalanguage.It'salanguageofoneofthebiggestpopulationsintheworld,"Yousafsaid."Ifyouknowthislanguage,youknowthecivilizationandmindofthepeople.”Ofcoursethelanguageitselfisunique,particularlyconsideringit'stonalfoundation."TonesareimportantbecausealotofChinesesyllables(soundsimilaroreventhesame-thetonechangestheirmeaning,"saidMikeFuksman,anAmericanlivinginBeijing.TorememberChinesecharacters,youcanconnectthemwithpicturesandmakesomeshortstories.ManypeoplefinditisimportanttouseimaginationwhenlearningChinese.Forexample,theChinesecharacterfor"tea"hassomelinesofgrass,theroofofahouseandpeopledrinkingtea.Learninganylanguagecomeswithbenefits,particularlyforthosewhoarealwayslookingtolearnmore.Sincesomelanguageshave“loanwords(外来词)”fromChinese,itmaybeeasierforonetopick资阳市一诊英语试题第4页共8页
分析由题意，PA=PB=PC=4$\sqrt{2}$，PA⊥PB⊥PC，将三棱锥扩充为正方体，其对角线长为4$\sqrt{6}$，则过P、A、B、C四点的球体的半径为2$\sqrt{6}$，即可求出过P、A、B、C四点的球体的表面积
解答解：由题意，PA=PB=PC=4$\sqrt{2}$，PA⊥PB⊥PC，
将三棱锥扩充为正方体，其对角线长为4$\sqrt{6}$，则过P、A、B、C四点的球体的半径为2$\sqrt{6}$，
∴表面积为4$π×（2\sqrt{6}）^{2}$=96π．
故选：C．
点评本题考查过P、A、B、C四点的球体的表面积，考查学生的计算能力，求出半径是关键．
